package sdu.icat.pj.util;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

public class InstanceUtil {

    public static <T> ArrayList<T> newArrayList() {
	return new ArrayList<T>();
    }

    public static <K,V> Map<K, V> newHashMap() {
	return new HashMap<>();
    }

    public static <S> Set<S> newHashSet() {
	return new HashSet<>();
    }
    
}
